New Chapter-- Fundamentals of Dimension Determination A Combined Chapters of 4, 6, 8 and 17 Mainly use the Teaching Notes
Shaft applications
Axial Loading P = load and A =cross-section area Or
Simple Bending Where M= bending moment C = distance from neutral axis to outer most fiber I = moment of inertia of the area Or
Simple torsion of circular shafts T = Torque, C = radius to outer most fiber J = Polar moment
Combined Bending and torsion of Circular Shafts
Final Shaft design Equations
Sample Problem 17.1 – snowmobile and track drive shaft
Combined Bending and Torsion of Circular Shaft
Stress flow-lines
Stress Concentration Factors d P c P a b
Problem: D/d = 1.2, r 0.1d, F = 550 lb, T = 2,100 lb-in Material hot rolled 1020 steel. Find d, D, and r for safety factor 3. The load is static, we have equation